Chapter 10- Sun ,earth moon 5th grade
Each day the moonrise is _____ minutes later than the day before.
50 minutes
Why does earth have four seasons?
Because the earth is tilted on a 23.5 degree axis and REVOLVES AROUND THE SUN in an elliptical orbit.
How much gravity does the moon have?
The moon has 1/6 of the earths gravity.
True
The moon has extreme temperatures
True
The moon rises in the east and sets in the west.
Solstice
The two days of the year in which the sun's most direct rays reach farthest north or farthest south (around june 22 and dec.22) winters solstice means winter for the Northern Hemisphere and summer for the Southern
What do gravity and inertia do?
They keep the earth from being pulled into the sun or hurled through space.
neap tide
a condition of the least difference between low and high tides:occurs when the gravitational forces of the moon and sun are perpendicular to each other as related to the earth (quarter moon phases)
mare
a dark,flat area on the moon's surface filled with hardened lava
What is a mare?
a darker, flat area of a sea on an the moon
spring tide
a tide with the greatest difference between high an low tide that occurs when the sun and the moon are aligned in a line with Earth.(new and full moons)
low tide
occur at the same time as high tides, but at the two points that are perpendicular to where the high tides are taking place
high tide
occur on two points of the earth at a time- one closest to the moon and one farthest from the moon.
lunar eclipse
occurs at a full moon when Earth is directly between the moon and the sun, and Earth blocks sunlight from reaching the moon.
solar eclipse
occurs when the Moon passes directly between the Sun and Earth and casts a shadow over part of Earth blocking the sunlight from the earth
crescent
phase where we see less than 1/2 of the sunlit portion of the moon
HOw often does the moon rotate?
the moon rotates once as it revolves counterclockwise around the earth once (every 29.5 days)
Law of Universal Gravitation
Every object in the universe attracts every other object depending on their masses and distances from each other
gibbous
Moon phase in which we see more than half,but not all of the moon's sunlit side
Who was the first person to walk on the moon?
Neil Armtrong
A __________ is created by the impact of a meteoroid.
crater
A lightly -colored high peak is a mountain called a ________________
highland
tide
the periodic rise and fall of the surface level of water in the ocean
Which side of the moon do we always see?
the sunlit side, the side that is the near side
equinox
the two days of the year when the day and night are almost the same length everywhere on earth (around March 21 and September 22) occurs when neither hemisphere is tilted toward or away from the sun.
wax
to grow
wane
to shrink
